# 定义数据
num1 = "100"
num2 = "1.99"
# 强制类型转换
print(type(num1))
print(type(num2))
print(type(num1))
print(type(int(num1)))
print(type(float(num2)))

info = 12345
print(type(info))
info1=[11,"aa",True,1.88]
print(type(info1))
print(type(str(info1)))
print(str(info1))

info3 = [11,22,33,44,55,66]
print(info3)
print(set(info3))
print(type(set(info3)))